body {
    width: 100vw;
    height: 100vh;
    background: url("../images/login-bg.jpg") center center no-repeat #033ccb;
}

.location-box {
    width: 0;
    height: 0;
    transform: translate(-50%, -50%);
    position: absolute;
    left: calc(50% + 10px);
    top: 50%;
}

.location-box .l-logo {
    transform: translate(-50%, -100%);
    margin-top: -160px;
}

.location-box .l-title {
    transform: translate(-50%, -100%);
    margin-top: -160px;
}

.location-box .l-input-box {
    width: 435px;
    height: 203px;
    background-color: rgba(0, 0, 0, 0.32);
    border-radius: 10px;
    transform: translate(-50%, -90px);
    text-align: center;
    padding-top: 22px;
}

.l-input-box input {
    display: block;
    margin: 0 auto;
    height: 45px;
    width: 395px;
    border-radius: 3px;
    border: 0;
    font-size: 14px;
}

.l-input-box input::-webkit-input-placeholder {
    color: #cccccc;
}

.l-input-box input:-ms-input-placeholder { /*IE10+*/
    color: #cccccc;
}

.l-input-box input:-moz-placeholder { /*Firefox4-18*/
    color: #cccccc;
}

.l-input-box input::-moz-placeholder { /*Firefox19+*/
    color: #cccccc;
}

.l-input-box input.user-input {
    text-indent: 55px;
}

.l-input-box input.pwd-input {
    margin-top: 20px;
    text-indent: 55px;
}

.l-input-box > span.user-input-icon:before,
.l-input-box > span.pwd-input-icon:before {
    content: "";
    background: url(../images/login-user.png) center no-repeat #1d85d7;
    width: 45px;
    height: 45px;
    position: absolute;
    line-height: 45px;
    margin-left: -198px;
    border-top-left-radius: 3px;
    border-bottom-left-radius: 3px;
}

.l-input-box > span.pwd-input-icon:before {
    background: url(../images/login-pwd.png) center no-repeat #1d85d7;
    margin-top: 20px;
}

.l-input-box input.summit-button {
    margin-top: 26px;
    cursor: pointer;
    border-radius: 5px;
    font-size: 16px;
    color: #ffffff;
    background: -webkit-linear-gradient(#ff761a, #f14014); /* Safari 5.1 - 6.0 */
    background: -o-linear-gradient(#ff761a, #f14014); /* Opera 11.1 - 12.0 */
    background: -moz-linear-gradient(#ff761a, #f14014); /* Firefox 3.6 - 15 */
    background: linear-gradient(#ff761a, #f14014); /* 标准的语法 */
}